btrfs: update superblock checksum on write
Change-Id: I8a2bcf8f462440568d9b3e2d9fbdb7208723bfb9 Reviewed-on: https://review.haiku-os.org/c/haiku/+/1596 Reviewed-by: Chế Vũ Gia Hy <ugen@cinnamon.is> Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
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@ -66,7 +66,7 @@ static uint32 kCrcTable[256] = {
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\param data Pointer to the byte stream.
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\param length Length of the byte stream in bytes.
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\return The crc checksum, or 0 if an error occurred.
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\return The crc checksum.
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*/
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uint32
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calculate_crc(uint32 crc, uint8* data, uint16 length)
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@ -656,7 +656,9 @@ Volume::FindBlock(off_t logical, off_t& physical)
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status_t
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Volume::WriteSuperBlock()
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{
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// TODO(lesderid): Calculate checksum
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fSuperBlock.checksum = calculate_crc((uint32)~1,
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(uint8 *)(*(&fSuperBlock + sizeof(fSuperBlock.checksum))),
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sizeof(fSuperBlock) - sizeof(fSuperBlock.checksum));
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if (write_pos(fDevice, BTRFS_SUPER_BLOCK_OFFSET, &fSuperBlock,
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sizeof(btrfs_super_block))
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